The validation rule for 'match' is useful when changing password and one field should match another field in the form.
The validation rule for 'must_accept' is useful when the user must accept a license agreement by clicking a checkbox.

Todo

Layout form elements in grid.

Style form using LESS and CSS.

Support all form elements.

Make page displaying how all form elements look like in different styles.

Support more validation rules.

Make example on how you use the validation rules.

Integrate/support with client side validation through js/ajax.

Support saving partial data of form through js/ajax.

Check that the form is valid by storing key in session and hidden field and match those.